ArgumentCountError in Laravel 5.8 - php

Question

I am trying to add social authentication to a Laravel 5.8 API project using socialite.
When trying to handle a social provide callback, the ArgumentCountError is thrown here
Too few arguments to function App\Http\Controllers\SocialAuthController::handleProviderCallback(), 0 passed and exactly 1 expected
The error is referring to the very first line of this code block
public function handleProviderCallback($provider)
{
// retrieve social user info
$socialUser = Socialite::driver($provider)->stateless()->user();
// check if social user provider record is stored
$userSocialAccount = SocialAccount::where('provider_id', $socialUser->id)->where('provider_name', $provider)->first();
if ($userSocialAccount) {
// retrieve the user from users store
$user = User::find($userSocialAccount->user_id);
// assign access token to user
$token = $user->createToken('Pramopro')->accessToken;
// return access token & user data
return response()->json([
'token' => $token,
'user' => (new UserResource($user))
]);
} else {
// store the new user record
$user = User::create([
'name' => $socialUser->name,
'username' => $socialUser->email,
'email_verified_at' => now()
]);
...
// assign passport token to user
$token = $user->createToken('******')->accessToken;
// return response
return response()->json(['token' => $token]);
}
}
Below is how I have set up other code. Frist in env I added
GOOGLE_CLIENT_ID=******
GOOGLE_CLIENT_SECRET=*******
GOOGLE_CALLBACK_URL=https://staging.appdomain.com/api/v1/user
Then modified web.php
Auth::routes(['verify' => true]);
Route::get('/auth/{provider}', 'SocialAuthController#redirectToProvider');
Route::get('/auth/{provider}/callback', 'SocialAuthController#handleProviderCallback');
Lastly in the google app, I added the uri path where users will be redirected to after successful authentication
https://staging.appdomain.com/api/v1/user
How do I fix this?

Answer 1

The callback uri that user should be redirected to after successful authentication was apparently not being cached. So running php artisan route:cache fixed it.